Crankshaft Sensor Peak Voltage Check
To check the peak voltage, do the following procedures.
Disconnect the connector of the magneto lead connector
from the main harness.
Measure the voltage with each lead connected cor-
The correct value may not be obtained if
Maintain the correct value of compression pressure for
the cylinder (Be sure to measure the voltage with the
spark plug installed to the cylinder head).
Do not touch the metal portion of the probe in case
of measuring the voltage, or you may receive a se-
rious electric shock.
Set the hand tester to DC 25 V range.
Connect the peak voltage adapter [A] to the tester and the
terminals of the magneto lead connector [B].
Special Tools - Hand Tester: 57001-1394
Peak Voltage Adapter: 57001-1415
Connection: Adapter Positive
Adapter Negative → White/Yellow Lead
Crank the engine by kicking the pedal several times to
measure the peak voltage of the crankshaft sensor.
Crankshaft Sensor Peak Voltage
If the voltage is less than the specified, check the crank-
Engine Stop Switch System Check
Start the engine.
Push the engine stop switch [A], stop the engine.
If the engine does not stop, check the engine stop switch
If the engine stop switch is good, replace the ECU.
→ Green/White Lead
4 V or more
ELECTRICAL SYSTEM 16-25